21630560

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:149

約数の個数: 144

約数和(自身を含む): 62052480

約数和(自身を除く): 40421920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 49, 56, 62, 70, 80, 89, 98, 112, 124, 140, 155, 160, 178, 196, 217, 224, 245, 248, 280, 310, 356, 392, 434, 445, 490, 496, 560, 620, 623, 712, 784, 868, 890, 980, 992, 1085, 1120, 1240, 1246, 1424, 1519, 1568, 1736, 1780, 1960, 2170, 2480, 2492, 2759, 2848, 3038, 3115, 3472, 3560, 3920, 4340, 4361, 4960, 4984, 5518, 6076, 6230, 6944, 7120, 7595, 7840, 8680, 8722, 9968, 11036, 12152, 12460, 13795, 14240, 15190, 17360, 17444, 19313, 19936, 21805, 22072, 24304, 24920, 27590, 30380, 34720, 34888, 38626, 43610, 44144, 48608, 49840, 55180, 60760, 69776, 77252, 87220, 88288, 96565, 99680, 110360, 121520, 135191, 139552, 154504, 174440, 193130, 220720, 243040, 270382, 309008, 348880, 386260, 441440, 540764, 618016, 675955, 697760, 772520, 1081528, 1351910, 1545040, 2163056, 2703820, 3090080, 4326112, 5407640, 10815280, 21630560]

約数ペア:

[(1, 21630560), (2, 10815280), (4, 5407640), (5, 4326112), (7, 3090080), (8, 2703820), (10, 2163056), (14, 1545040), (16, 1351910), (20, 1081528), (28, 772520), (31, 697760), (32, 675955), (35, 618016), (40, 540764), (49, 441440), (56, 386260), (62, 348880), (70, 309008), (80, 270382), (89, 243040), (98, 220720), (112, 193130), (124, 174440), (140, 154504), (155, 139552), (160, 135191), (178, 121520), (196, 110360), (217, 99680), (224, 96565), (245, 88288), (248, 87220), (280, 77252), (310, 69776), (356, 60760), (392, 55180), (434, 49840), (445, 48608), (490, 44144), (496, 43610), (560, 38626), (620, 34888), (623, 34720), (712, 30380), (784, 27590), (868, 24920), (890, 24304), (980, 22072), (992, 21805), (1085, 19936), (1120, 19313), (1240, 17444), (1246, 17360), (1424, 15190), (1519, 14240), (1568, 13795), (1736, 12460), (1780, 12152), (1960, 11036), (2170, 9968), (2480, 8722), (2492, 8680), (2759, 7840), (2848, 7595), (3038, 7120), (3115, 6944), (3472, 6230), (3560, 6076), (3920, 5518), (4340, 4984), (4361, 4960)]