21200320

素因数分解:

$2^6\times 5^1\times {\mathrm{97}}^1\times {\mathrm{683}}^1$

素因数の和:797

約数の個数: 56

約数和(自身を含む): 51078384

約数和(自身を除く): 29878064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 97, 160, 194, 320, 388, 485, 683, 776, 970, 1366, 1552, 1940, 2732, 3104, 3415, 3880, 5464, 6208, 6830, 7760, 10928, 13660, 15520, 21856, 27320, 31040, 43712, 54640, 66251, 109280, 132502, 218560, 265004, 331255, 530008, 662510, 1060016, 1325020, 2120032, 2650040, 4240064, 5300080, 10600160, 21200320]

約数ペア:

[(1, 21200320), (2, 10600160), (4, 5300080), (5, 4240064), (8, 2650040), (10, 2120032), (16, 1325020), (20, 1060016), (32, 662510), (40, 530008), (64, 331255), (80, 265004), (97, 218560), (160, 132502), (194, 109280), (320, 66251), (388, 54640), (485, 43712), (683, 31040), (776, 27320), (970, 21856), (1366, 15520), (1552, 13660), (1940, 10928), (2732, 7760), (3104, 6830), (3415, 6208), (3880, 5464)]