21503820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1451}}^1$

素因数の和:1495

約数の個数: 96

約数和(自身を含む): 68302080

約数和(自身を除く): 46798260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 19, 20, 26, 30, 38, 39, 52, 57, 60, 65, 76, 78, 95, 114, 130, 156, 190, 195, 228, 247, 260, 285, 380, 390, 494, 570, 741, 780, 988, 1140, 1235, 1451, 1482, 2470, 2902, 2964, 3705, 4353, 4940, 5804, 7255, 7410, 8706, 14510, 14820, 17412, 18863, 21765, 27569, 29020, 37726, 43530, 55138, 56589, 75452, 82707, 87060, 94315, 110276, 113178, 137845, 165414, 188630, 226356, 275690, 282945, 330828, 358397, 377260, 413535, 551380, 565890, 716794, 827070, 1075191, 1131780, 1433588, 1654140, 1791985, 2150382, 3583970, 4300764, 5375955, 7167940, 10751910, 21503820]

約数ペア:

[(1, 21503820), (2, 10751910), (3, 7167940), (4, 5375955), (5, 4300764), (6, 3583970), (10, 2150382), (12, 1791985), (13, 1654140), (15, 1433588), (19, 1131780), (20, 1075191), (26, 827070), (30, 716794), (38, 565890), (39, 551380), (52, 413535), (57, 377260), (60, 358397), (65, 330828), (76, 282945), (78, 275690), (95, 226356), (114, 188630), (130, 165414), (156, 137845), (190, 113178), (195, 110276), (228, 94315), (247, 87060), (260, 82707), (285, 75452), (380, 56589), (390, 55138), (494, 43530), (570, 37726), (741, 29020), (780, 27569), (988, 21765), (1140, 18863), (1235, 17412), (1451, 14820), (1482, 14510), (2470, 8706), (2902, 7410), (2964, 7255), (3705, 5804), (4353, 4940)]