21194964

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{557}}^1$

素因数の和:725

約数の個数: 72

約数和(自身を含む): 61746048

約数和(自身を除く): 40551084

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 151, 252, 302, 453, 557, 604, 906, 1057, 1114, 1359, 1671, 1812, 2114, 2228, 2718, 3171, 3342, 3899, 4228, 5013, 5436, 6342, 6684, 7798, 9513, 10026, 11697, 12684, 15596, 19026, 20052, 23394, 35091, 38052, 46788, 70182, 84107, 140364, 168214, 252321, 336428, 504642, 588749, 756963, 1009284, 1177498, 1513926, 1766247, 2354996, 3027852, 3532494, 5298741, 7064988, 10597482, 21194964]

約数ペア:

[(1, 21194964), (2, 10597482), (3, 7064988), (4, 5298741), (6, 3532494), (7, 3027852), (9, 2354996), (12, 1766247), (14, 1513926), (18, 1177498), (21, 1009284), (28, 756963), (36, 588749), (42, 504642), (63, 336428), (84, 252321), (126, 168214), (151, 140364), (252, 84107), (302, 70182), (453, 46788), (557, 38052), (604, 35091), (906, 23394), (1057, 20052), (1114, 19026), (1359, 15596), (1671, 12684), (1812, 11697), (2114, 10026), (2228, 9513), (2718, 7798), (3171, 6684), (3342, 6342), (3899, 5436), (4228, 5013)]