21704960

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{547}}^1$

素因数の和:599

約数の個数: 72

約数和(自身を含む): 53765376

約数和(自身を除く): 32060416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 547, 620, 640, 992, 1094, 1240, 1280, 1984, 2188, 2480, 2735, 3968, 4376, 4960, 5470, 7936, 8752, 9920, 10940, 16957, 17504, 19840, 21880, 33914, 35008, 39680, 43760, 67828, 70016, 84785, 87520, 135656, 140032, 169570, 175040, 271312, 339140, 350080, 542624, 678280, 700160, 1085248, 1356560, 2170496, 2713120, 4340992, 5426240, 10852480, 21704960]

約数ペア:

[(1, 21704960), (2, 10852480), (4, 5426240), (5, 4340992), (8, 2713120), (10, 2170496), (16, 1356560), (20, 1085248), (31, 700160), (32, 678280), (40, 542624), (62, 350080), (64, 339140), (80, 271312), (124, 175040), (128, 169570), (155, 140032), (160, 135656), (248, 87520), (256, 84785), (310, 70016), (320, 67828), (496, 43760), (547, 39680), (620, 35008), (640, 33914), (992, 21880), (1094, 19840), (1240, 17504), (1280, 16957), (1984, 10940), (2188, 9920), (2480, 8752), (2735, 7936), (3968, 5470), (4376, 4960)]