21004620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3847}}^1$

素因数の和:3879

約数の個数: 96

約数和(自身を含む): 72403968

約数和(自身を除く): 51399348

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, 3847, 5460, 7694, 11541, 15388, 19235, 23082, 26929, 38470, 46164, 50011, 53858, 57705, 76940, 80787, 100022, 107716, 115410, 134645, 150033, 161574, 200044, 230820, 250055, 269290, 300066, 323148, 350077, 403935, 500110, 538580, 600132, 700154, 750165, 807870, 1000220, 1050231, 1400308, 1500330, 1615740, 1750385, 2100462, 3000660, 3500770, 4200924, 5251155, 7001540, 10502310, 21004620]

約数ペア:

[(1, 21004620), (2, 10502310), (3, 7001540), (4, 5251155), (5, 4200924), (6, 3500770), (7, 3000660), (10, 2100462), (12, 1750385), (13, 1615740), (14, 1500330), (15, 1400308), (20, 1050231), (21, 1000220), (26, 807870), (28, 750165), (30, 700154), (35, 600132), (39, 538580), (42, 500110), (52, 403935), (60, 350077), (65, 323148), (70, 300066), (78, 269290), (84, 250055), (91, 230820), (105, 200044), (130, 161574), (140, 150033), (156, 134645), (182, 115410), (195, 107716), (210, 100022), (260, 80787), (273, 76940), (364, 57705), (390, 53858), (420, 50011), (455, 46164), (546, 38470), (780, 26929), (910, 23082), (1092, 19235), (1365, 15388), (1820, 11541), (2730, 7694), (3847, 5460)]