18961560

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{181}}^1$

素因数の和:298

約数の個数: 128

約数和(自身を含む): 64209600

約数和(自身を除く): 45248040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 97, 108, 120, 135, 180, 181, 194, 216, 270, 291, 360, 362, 388, 485, 540, 543, 582, 724, 776, 873, 905, 970, 1080, 1086, 1164, 1448, 1455, 1629, 1746, 1810, 1940, 2172, 2328, 2619, 2715, 2910, 3258, 3492, 3620, 3880, 4344, 4365, 4887, 5238, 5430, 5820, 6516, 6984, 7240, 8145, 8730, 9774, 10476, 10860, 11640, 13032, 13095, 16290, 17460, 17557, 19548, 20952, 21720, 24435, 26190, 32580, 34920, 35114, 39096, 48870, 52380, 52671, 65160, 70228, 87785, 97740, 104760, 105342, 140456, 158013, 175570, 195480, 210684, 263355, 316026, 351140, 421368, 474039, 526710, 632052, 702280, 790065, 948078, 1053420, 1264104, 1580130, 1896156, 2106840, 2370195, 3160260, 3792312, 4740390, 6320520, 9480780, 18961560]

約数ペア:

[(1, 18961560), (2, 9480780), (3, 6320520), (4, 4740390), (5, 3792312), (6, 3160260), (8, 2370195), (9, 2106840), (10, 1896156), (12, 1580130), (15, 1264104), (18, 1053420), (20, 948078), (24, 790065), (27, 702280), (30, 632052), (36, 526710), (40, 474039), (45, 421368), (54, 351140), (60, 316026), (72, 263355), (90, 210684), (97, 195480), (108, 175570), (120, 158013), (135, 140456), (180, 105342), (181, 104760), (194, 97740), (216, 87785), (270, 70228), (291, 65160), (360, 52671), (362, 52380), (388, 48870), (485, 39096), (540, 35114), (543, 34920), (582, 32580), (724, 26190), (776, 24435), (873, 21720), (905, 20952), (970, 19548), (1080, 17557), (1086, 17460), (1164, 16290), (1448, 13095), (1455, 13032), (1629, 11640), (1746, 10860), (1810, 10476), (1940, 9774), (2172, 8730), (2328, 8145), (2619, 7240), (2715, 6984), (2910, 6516), (3258, 5820), (3492, 5430), (3620, 5238), (3880, 4887), (4344, 4365)]