20238429880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{421}}^1\times {\mathrm{1471}}^1$

素因数の和:1965

約数の個数: 128

約数和(自身を含む): 49197772800

約数和(自身を除く): 28959342920

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 380, 421, 430, 760, 817, 842, 860, 1471, 1634, 1684, 1720, 2105, 2942, 3268, 3368, 4085, 4210, 5884, 6536, 7355, 7999, 8170, 8420, 11768, 14710, 15998, 16340, 16840, 18103, 27949, 29420, 31996, 32680, 36206, 39995, 55898, 58840, 63253, 63992, 72412, 79990, 90515, 111796, 126506, 139745, 144824, 159980, 181030, 223592, 253012, 279490, 316265, 319960, 343957, 362060, 506024, 558980, 619291, 632530, 687914, 724120, 1117960, 1201807, 1238582, 1265060, 1375828, 1719785, 2403614, 2477164, 2530120, 2751656, 3096455, 3439570, 4807228, 4954328, 6009035, 6192910, 6879140, 9614456, 11766529, 12018070, 12385820, 13758280, 23533058, 24036140, 24771640, 26629513, 47066116, 48072280, 53259026, 58832645, 94132232, 106518052, 117665290, 133147565, 213036104, 235330580, 266295130, 470661160, 505960747, 532590260, 1011921494, 1065180520, 2023842988, 2529803735, 4047685976, 5059607470, 10119214940, 20238429880]

約数ペア:

[(1, 20238429880), (2, 10119214940), (4, 5059607470), (5, 4047685976), (8, 2529803735), (10, 2023842988), (19, 1065180520), (20, 1011921494), (38, 532590260), (40, 505960747), (43, 470661160), (76, 266295130), (86, 235330580), (95, 213036104), (152, 133147565), (172, 117665290), (190, 106518052), (215, 94132232), (344, 58832645), (380, 53259026), (421, 48072280), (430, 47066116), (760, 26629513), (817, 24771640), (842, 24036140), (860, 23533058), (1471, 13758280), (1634, 12385820), (1684, 12018070), (1720, 11766529), (2105, 9614456), (2942, 6879140), (3268, 6192910), (3368, 6009035), (4085, 4954328), (4210, 4807228), (5884, 3439570), (6536, 3096455), (7355, 2751656), (7999, 2530120), (8170, 2477164), (8420, 2403614), (11768, 1719785), (14710, 1375828), (15998, 1265060), (16340, 1238582), (16840, 1201807), (18103, 1117960), (27949, 724120), (29420, 687914), (31996, 632530), (32680, 619291), (36206, 558980), (39995, 506024), (55898, 362060), (58840, 343957), (63253, 319960), (63992, 316265), (72412, 279490), (79990, 253012), (90515, 223592), (111796, 181030), (126506, 159980), (139745, 144824)]