208994560

素因数分解:

$2^8\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{229}}^1$

素因数の和:304

約数の個数: 144

約数和(自身を含む): 541578240

約数和(自身を除く): 332583680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 32, 40, 46, 62, 64, 80, 92, 115, 124, 128, 155, 160, 184, 229, 230, 248, 256, 310, 320, 368, 458, 460, 496, 620, 640, 713, 736, 916, 920, 992, 1145, 1240, 1280, 1426, 1472, 1832, 1840, 1984, 2290, 2480, 2852, 2944, 3565, 3664, 3680, 3968, 4580, 4960, 5267, 5704, 5888, 7099, 7130, 7328, 7360, 7936, 9160, 9920, 10534, 11408, 14198, 14260, 14656, 14720, 18320, 19840, 21068, 22816, 26335, 28396, 28520, 29312, 29440, 35495, 36640, 39680, 42136, 45632, 52670, 56792, 57040, 58624, 70990, 73280, 84272, 91264, 105340, 113584, 114080, 141980, 146560, 163277, 168544, 182528, 210680, 227168, 228160, 283960, 293120, 326554, 337088, 421360, 454336, 456320, 567920, 653108, 674176, 816385, 842720, 908672, 912640, 1135840, 1306216, 1348352, 1632770, 1685440, 1817344, 2271680, 2612432, 3265540, 3370880, 4543360, 5224864, 6531080, 6741760, 9086720, 10449728, 13062160, 20899456, 26124320, 41798912, 52248640, 104497280, 208994560]

約数ペア:

[(1, 208994560), (2, 104497280), (4, 52248640), (5, 41798912), (8, 26124320), (10, 20899456), (16, 13062160), (20, 10449728), (23, 9086720), (31, 6741760), (32, 6531080), (40, 5224864), (46, 4543360), (62, 3370880), (64, 3265540), (80, 2612432), (92, 2271680), (115, 1817344), (124, 1685440), (128, 1632770), (155, 1348352), (160, 1306216), (184, 1135840), (229, 912640), (230, 908672), (248, 842720), (256, 816385), (310, 674176), (320, 653108), (368, 567920), (458, 456320), (460, 454336), (496, 421360), (620, 337088), (640, 326554), (713, 293120), (736, 283960), (916, 228160), (920, 227168), (992, 210680), (1145, 182528), (1240, 168544), (1280, 163277), (1426, 146560), (1472, 141980), (1832, 114080), (1840, 113584), (1984, 105340), (2290, 91264), (2480, 84272), (2852, 73280), (2944, 70990), (3565, 58624), (3664, 57040), (3680, 56792), (3968, 52670), (4580, 45632), (4960, 42136), (5267, 39680), (5704, 36640), (5888, 35495), (7099, 29440), (7130, 29312), (7328, 28520), (7360, 28396), (7936, 26335), (9160, 22816), (9920, 21068), (10534, 19840), (11408, 18320), (14198, 14720), (14260, 14656)]