21969440

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:270

約数の個数: 96

約数和(自身を含む): 56582064

約数和(自身を除く): 34612624

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 41, 68, 80, 82, 85, 136, 160, 164, 170, 197, 205, 272, 328, 340, 394, 410, 544, 656, 680, 697, 788, 820, 985, 1312, 1360, 1394, 1576, 1640, 1970, 2720, 2788, 3152, 3280, 3349, 3485, 3940, 5576, 6304, 6560, 6698, 6970, 7880, 8077, 11152, 13396, 13940, 15760, 16154, 16745, 22304, 26792, 27880, 31520, 32308, 33490, 40385, 53584, 55760, 64616, 66980, 80770, 107168, 111520, 129232, 133960, 137309, 161540, 258464, 267920, 274618, 323080, 535840, 549236, 646160, 686545, 1098472, 1292320, 1373090, 2196944, 2746180, 4393888, 5492360, 10984720, 21969440]

約数ペア:

[(1, 21969440), (2, 10984720), (4, 5492360), (5, 4393888), (8, 2746180), (10, 2196944), (16, 1373090), (17, 1292320), (20, 1098472), (32, 686545), (34, 646160), (40, 549236), (41, 535840), (68, 323080), (80, 274618), (82, 267920), (85, 258464), (136, 161540), (160, 137309), (164, 133960), (170, 129232), (197, 111520), (205, 107168), (272, 80770), (328, 66980), (340, 64616), (394, 55760), (410, 53584), (544, 40385), (656, 33490), (680, 32308), (697, 31520), (788, 27880), (820, 26792), (985, 22304), (1312, 16745), (1360, 16154), (1394, 15760), (1576, 13940), (1640, 13396), (1970, 11152), (2720, 8077), (2788, 7880), (3152, 6970), (3280, 6698), (3349, 6560), (3485, 6304), (3940, 5576)]