19428240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{479}}^1$

素因数の和:521

約数の個数: 120

約数和(自身を含む): 65352960

約数和(自身を除く): 45924720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 169, 195, 208, 240, 260, 312, 338, 390, 479, 507, 520, 624, 676, 780, 845, 958, 1014, 1040, 1352, 1437, 1560, 1690, 1916, 2028, 2395, 2535, 2704, 2874, 3120, 3380, 3832, 4056, 4790, 5070, 5748, 6227, 6760, 7185, 7664, 8112, 9580, 10140, 11496, 12454, 13520, 14370, 18681, 19160, 20280, 22992, 24908, 28740, 31135, 37362, 38320, 40560, 49816, 57480, 62270, 74724, 80951, 93405, 99632, 114960, 124540, 149448, 161902, 186810, 242853, 249080, 298896, 323804, 373620, 404755, 485706, 498160, 647608, 747240, 809510, 971412, 1214265, 1295216, 1494480, 1619020, 1942824, 2428530, 3238040, 3885648, 4857060, 6476080, 9714120, 19428240]

約数ペア:

[(1, 19428240), (2, 9714120), (3, 6476080), (4, 4857060), (5, 3885648), (6, 3238040), (8, 2428530), (10, 1942824), (12, 1619020), (13, 1494480), (15, 1295216), (16, 1214265), (20, 971412), (24, 809510), (26, 747240), (30, 647608), (39, 498160), (40, 485706), (48, 404755), (52, 373620), (60, 323804), (65, 298896), (78, 249080), (80, 242853), (104, 186810), (120, 161902), (130, 149448), (156, 124540), (169, 114960), (195, 99632), (208, 93405), (240, 80951), (260, 74724), (312, 62270), (338, 57480), (390, 49816), (479, 40560), (507, 38320), (520, 37362), (624, 31135), (676, 28740), (780, 24908), (845, 22992), (958, 20280), (1014, 19160), (1040, 18681), (1352, 14370), (1437, 13520), (1560, 12454), (1690, 11496), (1916, 10140), (2028, 9580), (2395, 8112), (2535, 7664), (2704, 7185), (2874, 6760), (3120, 6227), (3380, 5748), (3832, 5070), (4056, 4790)]