21235560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{271}}^1\times {\mathrm{653}}^1$

素因数の和:938

約数の個数: 64

約数和(自身を含む): 64039680

約数和(自身を除く): 42804120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 271, 542, 653, 813, 1084, 1306, 1355, 1626, 1959, 2168, 2612, 2710, 3252, 3265, 3918, 4065, 5224, 5420, 6504, 6530, 7836, 8130, 9795, 10840, 13060, 15672, 16260, 19590, 26120, 32520, 39180, 78360, 176963, 353926, 530889, 707852, 884815, 1061778, 1415704, 1769630, 2123556, 2654445, 3539260, 4247112, 5308890, 7078520, 10617780, 21235560]

約数ペア:

[(1, 21235560), (2, 10617780), (3, 7078520), (4, 5308890), (5, 4247112), (6, 3539260), (8, 2654445), (10, 2123556), (12, 1769630), (15, 1415704), (20, 1061778), (24, 884815), (30, 707852), (40, 530889), (60, 353926), (120, 176963), (271, 78360), (542, 39180), (653, 32520), (813, 26120), (1084, 19590), (1306, 16260), (1355, 15672), (1626, 13060), (1959, 10840), (2168, 9795), (2612, 8130), (2710, 7836), (3252, 6530), (3265, 6504), (3918, 5420), (4065, 5224)]