28706340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{149}}^1$

素因数の和:206

約数の個数: 144

約数和(自身を含む): 92232000

約数和(自身を除く): 63525660

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 19, 20, 26, 30, 38, 39, 52, 57, 60, 65, 76, 78, 95, 114, 130, 149, 156, 169, 190, 195, 228, 247, 260, 285, 298, 338, 380, 390, 447, 494, 507, 570, 596, 676, 741, 745, 780, 845, 894, 988, 1014, 1140, 1235, 1482, 1490, 1690, 1788, 1937, 2028, 2235, 2470, 2535, 2831, 2964, 2980, 3211, 3380, 3705, 3874, 4470, 4940, 5070, 5662, 5811, 6422, 7410, 7748, 8493, 8940, 9633, 9685, 10140, 11324, 11622, 12844, 14155, 14820, 16055, 16986, 19266, 19370, 23244, 25181, 28310, 29055, 32110, 33972, 36803, 38532, 38740, 42465, 48165, 50362, 56620, 58110, 64220, 73606, 75543, 84930, 96330, 100724, 110409, 116220, 125905, 147212, 151086, 169860, 184015, 192660, 220818, 251810, 302172, 368030, 377715, 441636, 478439, 503620, 552045, 736060, 755430, 956878, 1104090, 1435317, 1510860, 1913756, 2208180, 2392195, 2870634, 4784390, 5741268, 7176585, 9568780, 14353170, 28706340]

約数ペア:

[(1, 28706340), (2, 14353170), (3, 9568780), (4, 7176585), (5, 5741268), (6, 4784390), (10, 2870634), (12, 2392195), (13, 2208180), (15, 1913756), (19, 1510860), (20, 1435317), (26, 1104090), (30, 956878), (38, 755430), (39, 736060), (52, 552045), (57, 503620), (60, 478439), (65, 441636), (76, 377715), (78, 368030), (95, 302172), (114, 251810), (130, 220818), (149, 192660), (156, 184015), (169, 169860), (190, 151086), (195, 147212), (228, 125905), (247, 116220), (260, 110409), (285, 100724), (298, 96330), (338, 84930), (380, 75543), (390, 73606), (447, 64220), (494, 58110), (507, 56620), (570, 50362), (596, 48165), (676, 42465), (741, 38740), (745, 38532), (780, 36803), (845, 33972), (894, 32110), (988, 29055), (1014, 28310), (1140, 25181), (1235, 23244), (1482, 19370), (1490, 19266), (1690, 16986), (1788, 16055), (1937, 14820), (2028, 14155), (2235, 12844), (2470, 11622), (2535, 11324), (2831, 10140), (2964, 9685), (2980, 9633), (3211, 8940), (3380, 8493), (3705, 7748), (3874, 7410), (4470, 6422), (4940, 5811), (5070, 5662)]