399815680

素因数分解:

$2^{10}\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{229}}^1$

素因数の和:296

約数の個数: 176

約数和(自身を含む): 1084746240

約数和(自身を除く): 684930560

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 44, 55, 62, 64, 80, 88, 110, 124, 128, 155, 160, 176, 220, 229, 248, 256, 310, 320, 341, 352, 440, 458, 496, 512, 620, 640, 682, 704, 880, 916, 992, 1024, 1145, 1240, 1280, 1364, 1408, 1705, 1760, 1832, 1984, 2290, 2480, 2519, 2560, 2728, 2816, 3410, 3520, 3664, 3968, 4580, 4960, 5038, 5120, 5456, 5632, 6820, 7040, 7099, 7328, 7936, 9160, 9920, 10076, 10912, 11264, 12595, 13640, 14080, 14198, 14656, 15872, 18320, 19840, 20152, 21824, 25190, 27280, 28160, 28396, 29312, 31744, 35495, 36640, 39680, 40304, 43648, 50380, 54560, 56320, 56792, 58624, 70990, 73280, 78089, 79360, 80608, 87296, 100760, 109120, 113584, 117248, 141980, 146560, 156178, 158720, 161216, 174592, 201520, 218240, 227168, 234496, 283960, 293120, 312356, 322432, 349184, 390445, 403040, 436480, 454336, 567920, 586240, 624712, 644864, 780890, 806080, 872960, 908672, 1135840, 1172480, 1249424, 1289728, 1561780, 1612160, 1745920, 1817344, 2271680, 2498848, 2579456, 3123560, 3224320, 3634688, 4543360, 4997696, 6247120, 6448640, 7269376, 9086720, 9995392, 12494240, 12897280, 18173440, 19990784, 24988480, 36346880, 39981568, 49976960, 79963136, 99953920, 199907840, 399815680]

約数ペア:

[(1, 399815680), (2, 199907840), (4, 99953920), (5, 79963136), (8, 49976960), (10, 39981568), (11, 36346880), (16, 24988480), (20, 19990784), (22, 18173440), (31, 12897280), (32, 12494240), (40, 9995392), (44, 9086720), (55, 7269376), (62, 6448640), (64, 6247120), (80, 4997696), (88, 4543360), (110, 3634688), (124, 3224320), (128, 3123560), (155, 2579456), (160, 2498848), (176, 2271680), (220, 1817344), (229, 1745920), (248, 1612160), (256, 1561780), (310, 1289728), (320, 1249424), (341, 1172480), (352, 1135840), (440, 908672), (458, 872960), (496, 806080), (512, 780890), (620, 644864), (640, 624712), (682, 586240), (704, 567920), (880, 454336), (916, 436480), (992, 403040), (1024, 390445), (1145, 349184), (1240, 322432), (1280, 312356), (1364, 293120), (1408, 283960), (1705, 234496), (1760, 227168), (1832, 218240), (1984, 201520), (2290, 174592), (2480, 161216), (2519, 158720), (2560, 156178), (2728, 146560), (2816, 141980), (3410, 117248), (3520, 113584), (3664, 109120), (3968, 100760), (4580, 87296), (4960, 80608), (5038, 79360), (5120, 78089), (5456, 73280), (5632, 70990), (6820, 58624), (7040, 56792), (7099, 56320), (7328, 54560), (7936, 50380), (9160, 43648), (9920, 40304), (10076, 39680), (10912, 36640), (11264, 35495), (12595, 31744), (13640, 29312), (14080, 28396), (14198, 28160), (14656, 27280), (15872, 25190), (18320, 21824), (19840, 20152)]