21383700

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5483}}^1$

素因数の和:5513

約数の個数: 72

約数和(自身を含む): 66641568

約数和(自身を除く): 45257868

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 5483, 10966, 16449, 21932, 27415, 32898, 54830, 65796, 71279, 82245, 109660, 137075, 142558, 164490, 213837, 274150, 285116, 328980, 356395, 411225, 427674, 548300, 712790, 822450, 855348, 1069185, 1425580, 1644900, 1781975, 2138370, 3563950, 4276740, 5345925, 7127900, 10691850, 21383700]

約数ペア:

[(1, 21383700), (2, 10691850), (3, 7127900), (4, 5345925), (5, 4276740), (6, 3563950), (10, 2138370), (12, 1781975), (13, 1644900), (15, 1425580), (20, 1069185), (25, 855348), (26, 822450), (30, 712790), (39, 548300), (50, 427674), (52, 411225), (60, 356395), (65, 328980), (75, 285116), (78, 274150), (100, 213837), (130, 164490), (150, 142558), (156, 137075), (195, 109660), (260, 82245), (300, 71279), (325, 65796), (390, 54830), (650, 32898), (780, 27415), (975, 21932), (1300, 16449), (1950, 10966), (3900, 5483)]