20714980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7243}}^1$

素因数の和:7276

約数の個数: 48

約数和(自身を含む): 51113664

約数和(自身を除く): 30398684

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 7243, 14486, 28972, 36215, 72430, 79673, 94159, 144860, 159346, 188318, 318692, 376636, 398365, 470795, 796730, 941590, 1035749, 1593460, 1883180, 2071498, 4142996, 5178745, 10357490, 20714980]

約数ペア:

[(1, 20714980), (2, 10357490), (4, 5178745), (5, 4142996), (10, 2071498), (11, 1883180), (13, 1593460), (20, 1035749), (22, 941590), (26, 796730), (44, 470795), (52, 398365), (55, 376636), (65, 318692), (110, 188318), (130, 159346), (143, 144860), (220, 94159), (260, 79673), (286, 72430), (572, 36215), (715, 28972), (1430, 14486), (2860, 7243)]