21003930

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:276

約数の個数: 96

約数和(自身を含む): 58631040

約数和(自身を除く): 37627110

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 30, 38, 45, 57, 71, 90, 95, 114, 142, 171, 173, 190, 213, 285, 342, 346, 355, 426, 519, 570, 639, 710, 855, 865, 1038, 1065, 1278, 1349, 1557, 1710, 1730, 2130, 2595, 2698, 3114, 3195, 3287, 4047, 5190, 6390, 6574, 6745, 7785, 8094, 9861, 12141, 12283, 13490, 15570, 16435, 19722, 20235, 24282, 24566, 29583, 32870, 36849, 40470, 49305, 59166, 60705, 61415, 73698, 98610, 110547, 121410, 122830, 147915, 184245, 221094, 233377, 295830, 368490, 466754, 552735, 700131, 1105470, 1166885, 1400262, 2100393, 2333770, 3500655, 4200786, 7001310, 10501965, 21003930]

約数ペア:

[(1, 21003930), (2, 10501965), (3, 7001310), (5, 4200786), (6, 3500655), (9, 2333770), (10, 2100393), (15, 1400262), (18, 1166885), (19, 1105470), (30, 700131), (38, 552735), (45, 466754), (57, 368490), (71, 295830), (90, 233377), (95, 221094), (114, 184245), (142, 147915), (171, 122830), (173, 121410), (190, 110547), (213, 98610), (285, 73698), (342, 61415), (346, 60705), (355, 59166), (426, 49305), (519, 40470), (570, 36849), (639, 32870), (710, 29583), (855, 24566), (865, 24282), (1038, 20235), (1065, 19722), (1278, 16435), (1349, 15570), (1557, 13490), (1710, 12283), (1730, 12141), (2130, 9861), (2595, 8094), (2698, 7785), (3114, 6745), (3195, 6574), (3287, 6390), (4047, 5190)]