20398320

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{691}}^1$

素因数の和:751

約数の個数: 120

約数和(自身を含む): 70276752

約数和(自身を除く): 49878432

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 41, 45, 48, 60, 72, 80, 82, 90, 120, 123, 144, 164, 180, 205, 240, 246, 328, 360, 369, 410, 492, 615, 656, 691, 720, 738, 820, 984, 1230, 1382, 1476, 1640, 1845, 1968, 2073, 2460, 2764, 2952, 3280, 3455, 3690, 4146, 4920, 5528, 5904, 6219, 6910, 7380, 8292, 9840, 10365, 11056, 12438, 13820, 14760, 16584, 20730, 24876, 27640, 28331, 29520, 31095, 33168, 41460, 49752, 55280, 56662, 62190, 82920, 84993, 99504, 113324, 124380, 141655, 165840, 169986, 226648, 248760, 254979, 283310, 339972, 424965, 453296, 497520, 509958, 566620, 679944, 849930, 1019916, 1133240, 1274895, 1359888, 1699860, 2039832, 2266480, 2549790, 3399720, 4079664, 5099580, 6799440, 10199160, 20398320]

約数ペア:

[(1, 20398320), (2, 10199160), (3, 6799440), (4, 5099580), (5, 4079664), (6, 3399720), (8, 2549790), (9, 2266480), (10, 2039832), (12, 1699860), (15, 1359888), (16, 1274895), (18, 1133240), (20, 1019916), (24, 849930), (30, 679944), (36, 566620), (40, 509958), (41, 497520), (45, 453296), (48, 424965), (60, 339972), (72, 283310), (80, 254979), (82, 248760), (90, 226648), (120, 169986), (123, 165840), (144, 141655), (164, 124380), (180, 113324), (205, 99504), (240, 84993), (246, 82920), (328, 62190), (360, 56662), (369, 55280), (410, 49752), (492, 41460), (615, 33168), (656, 31095), (691, 29520), (720, 28331), (738, 27640), (820, 24876), (984, 20730), (1230, 16584), (1382, 14760), (1476, 13820), (1640, 12438), (1845, 11056), (1968, 10365), (2073, 9840), (2460, 8292), (2764, 7380), (2952, 6910), (3280, 6219), (3455, 5904), (3690, 5528), (4146, 4920)]