21418890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{709}}^1$

素因数の和:791

約数の個数: 64

約数和(自身を含む): 55209600

約数和(自身を除く): 33790710

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 30, 38, 53, 57, 95, 106, 114, 159, 190, 265, 285, 318, 530, 570, 709, 795, 1007, 1418, 1590, 2014, 2127, 3021, 3545, 4254, 5035, 6042, 7090, 10070, 10635, 13471, 15105, 21270, 26942, 30210, 37577, 40413, 67355, 75154, 80826, 112731, 134710, 187885, 202065, 225462, 375770, 404130, 563655, 713963, 1127310, 1427926, 2141889, 3569815, 4283778, 7139630, 10709445, 21418890]

約数ペア:

[(1, 21418890), (2, 10709445), (3, 7139630), (5, 4283778), (6, 3569815), (10, 2141889), (15, 1427926), (19, 1127310), (30, 713963), (38, 563655), (53, 404130), (57, 375770), (95, 225462), (106, 202065), (114, 187885), (159, 134710), (190, 112731), (265, 80826), (285, 75154), (318, 67355), (530, 40413), (570, 37577), (709, 30210), (795, 26942), (1007, 21270), (1418, 15105), (1590, 13471), (2014, 10635), (2127, 10070), (3021, 7090), (3545, 6042), (4254, 5035)]