21287790

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{211}}^1$

素因数の和:302

約数の個数: 96

約数和(自身を含む): 59529600

約数和(自身を除く): 38241810

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 30, 38, 45, 57, 59, 90, 95, 114, 118, 171, 177, 190, 211, 285, 295, 342, 354, 422, 531, 570, 590, 633, 855, 885, 1055, 1062, 1121, 1266, 1710, 1770, 1899, 2110, 2242, 2655, 3165, 3363, 3798, 4009, 5310, 5605, 6330, 6726, 8018, 9495, 10089, 11210, 12027, 12449, 16815, 18990, 20045, 20178, 24054, 24898, 33630, 36081, 37347, 40090, 50445, 60135, 62245, 72162, 74694, 100890, 112041, 120270, 124490, 180405, 186735, 224082, 236531, 360810, 373470, 473062, 560205, 709593, 1120410, 1182655, 1419186, 2128779, 2365310, 3547965, 4257558, 7095930, 10643895, 21287790]

約数ペア:

[(1, 21287790), (2, 10643895), (3, 7095930), (5, 4257558), (6, 3547965), (9, 2365310), (10, 2128779), (15, 1419186), (18, 1182655), (19, 1120410), (30, 709593), (38, 560205), (45, 473062), (57, 373470), (59, 360810), (90, 236531), (95, 224082), (114, 186735), (118, 180405), (171, 124490), (177, 120270), (190, 112041), (211, 100890), (285, 74694), (295, 72162), (342, 62245), (354, 60135), (422, 50445), (531, 40090), (570, 37347), (590, 36081), (633, 33630), (855, 24898), (885, 24054), (1055, 20178), (1062, 20045), (1121, 18990), (1266, 16815), (1710, 12449), (1770, 12027), (1899, 11210), (2110, 10089), (2242, 9495), (2655, 8018), (3165, 6726), (3363, 6330), (3798, 5605), (4009, 5310)]