21910980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4013}}^1$

素因数の和:4045

約数の個数: 96

約数和(自身を含む): 75527424

約数和(自身を除く): 53616444

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 52, 60, 65, 70, 78, 84, 91, 105, 130, 140, 156, 182, 195, 210, 260, 273, 364, 390, 420, 455, 546, 780, 910, 1092, 1365, 1820, 2730, 4013, 5460, 8026, 12039, 16052, 20065, 24078, 28091, 40130, 48156, 52169, 56182, 60195, 80260, 84273, 104338, 112364, 120390, 140455, 156507, 168546, 208676, 240780, 260845, 280910, 313014, 337092, 365183, 421365, 521690, 561820, 626028, 730366, 782535, 842730, 1043380, 1095549, 1460732, 1565070, 1685460, 1825915, 2191098, 3130140, 3651830, 4382196, 5477745, 7303660, 10955490, 21910980]

約数ペア:

[(1, 21910980), (2, 10955490), (3, 7303660), (4, 5477745), (5, 4382196), (6, 3651830), (7, 3130140), (10, 2191098), (12, 1825915), (13, 1685460), (14, 1565070), (15, 1460732), (20, 1095549), (21, 1043380), (26, 842730), (28, 782535), (30, 730366), (35, 626028), (39, 561820), (42, 521690), (52, 421365), (60, 365183), (65, 337092), (70, 313014), (78, 280910), (84, 260845), (91, 240780), (105, 208676), (130, 168546), (140, 156507), (156, 140455), (182, 120390), (195, 112364), (210, 104338), (260, 84273), (273, 80260), (364, 60195), (390, 56182), (420, 52169), (455, 48156), (546, 40130), (780, 28091), (910, 24078), (1092, 20065), (1365, 16052), (1820, 12039), (2730, 8026), (4013, 5460)]