21764480

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1097}}^1$

素因数の和:1147

約数の個数: 64

約数和(自身を含む): 53758080

約数和(自身を除く): 31993600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1097, 1240, 1984, 2194, 2480, 3968, 4388, 4960, 5485, 8776, 9920, 10970, 17552, 19840, 21940, 34007, 35104, 43880, 68014, 70208, 87760, 136028, 140416, 170035, 175520, 272056, 340070, 351040, 544112, 680140, 702080, 1088224, 1360280, 2176448, 2720560, 4352896, 5441120, 10882240, 21764480]

約数ペア:

[(1, 21764480), (2, 10882240), (4, 5441120), (5, 4352896), (8, 2720560), (10, 2176448), (16, 1360280), (20, 1088224), (31, 702080), (32, 680140), (40, 544112), (62, 351040), (64, 340070), (80, 272056), (124, 175520), (128, 170035), (155, 140416), (160, 136028), (248, 87760), (310, 70208), (320, 68014), (496, 43880), (620, 35104), (640, 34007), (992, 21940), (1097, 19840), (1240, 17552), (1984, 10970), (2194, 9920), (2480, 8776), (3968, 5485), (4388, 4960)]