19890738

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{101}}^1\times {\mathrm{521}}^1$

素因数の和:640

約数の個数: 64

約数和(自身を含む): 51114240

約数和(自身を除く): 31223502

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 101, 126, 189, 202, 303, 378, 521, 606, 707, 909, 1042, 1414, 1563, 1818, 2121, 2727, 3126, 3647, 4242, 4689, 5454, 6363, 7294, 9378, 10941, 12726, 14067, 19089, 21882, 28134, 32823, 38178, 52621, 65646, 98469, 105242, 157863, 196938, 315726, 368347, 473589, 736694, 947178, 1105041, 1420767, 2210082, 2841534, 3315123, 6630246, 9945369, 19890738]

約数ペア:

[(1, 19890738), (2, 9945369), (3, 6630246), (6, 3315123), (7, 2841534), (9, 2210082), (14, 1420767), (18, 1105041), (21, 947178), (27, 736694), (42, 473589), (54, 368347), (63, 315726), (101, 196938), (126, 157863), (189, 105242), (202, 98469), (303, 65646), (378, 52621), (521, 38178), (606, 32823), (707, 28134), (909, 21882), (1042, 19089), (1414, 14067), (1563, 12726), (1818, 10941), (2121, 9378), (2727, 7294), (3126, 6363), (3647, 5454), (4242, 4689)]