21216930

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1423}}^1$

素因数の和:1511

約数の個数: 64

約数和(自身を含む): 59056128

約数和(自身を除く): 37839198

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 71, 105, 142, 210, 213, 355, 426, 497, 710, 994, 1065, 1423, 1491, 2130, 2485, 2846, 2982, 4269, 4970, 7115, 7455, 8538, 9961, 14230, 14910, 19922, 21345, 29883, 42690, 49805, 59766, 99610, 101033, 149415, 202066, 298830, 303099, 505165, 606198, 707231, 1010330, 1414462, 1515495, 2121693, 3030990, 3536155, 4243386, 7072310, 10608465, 21216930]

約数ペア:

[(1, 21216930), (2, 10608465), (3, 7072310), (5, 4243386), (6, 3536155), (7, 3030990), (10, 2121693), (14, 1515495), (15, 1414462), (21, 1010330), (30, 707231), (35, 606198), (42, 505165), (70, 303099), (71, 298830), (105, 202066), (142, 149415), (210, 101033), (213, 99610), (355, 59766), (426, 49805), (497, 42690), (710, 29883), (994, 21345), (1065, 19922), (1423, 14910), (1491, 14230), (2130, 9961), (2485, 8538), (2846, 7455), (2982, 7115), (4269, 4970)]