188336780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{41}}^1\times {\mathrm{239}}^1$

素因数の和:351

約数の個数: 72

約数和(自身を含む): 420396480

約数和(自身を除く): 232059700

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 239, 310, 410, 478, 620, 820, 956, 961, 1195, 1271, 1922, 2390, 2542, 3844, 4780, 4805, 5084, 6355, 7409, 9610, 9799, 12710, 14818, 19220, 19598, 25420, 29636, 37045, 39196, 39401, 48995, 74090, 78802, 97990, 148180, 157604, 195980, 197005, 229679, 303769, 394010, 459358, 607538, 788020, 918716, 1148395, 1215076, 1518845, 2296790, 3037690, 4593580, 6075380, 9416839, 18833678, 37667356, 47084195, 94168390, 188336780]

約数ペア:

[(1, 188336780), (2, 94168390), (4, 47084195), (5, 37667356), (10, 18833678), (20, 9416839), (31, 6075380), (41, 4593580), (62, 3037690), (82, 2296790), (124, 1518845), (155, 1215076), (164, 1148395), (205, 918716), (239, 788020), (310, 607538), (410, 459358), (478, 394010), (620, 303769), (820, 229679), (956, 197005), (961, 195980), (1195, 157604), (1271, 148180), (1922, 97990), (2390, 78802), (2542, 74090), (3844, 48995), (4780, 39401), (4805, 39196), (5084, 37045), (6355, 29636), (7409, 25420), (9610, 19598), (9799, 19220), (12710, 14818)]