123758020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{61}}^1\times {\mathrm{281}}^1$

素因数の和:389

約数の個数: 72

約数和(自身を含む): 279778968

約数和(自身を除く): 156020948

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 61, 76, 95, 122, 190, 244, 281, 305, 361, 380, 562, 610, 722, 1124, 1159, 1220, 1405, 1444, 1805, 2318, 2810, 3610, 4636, 5339, 5620, 5795, 7220, 10678, 11590, 17141, 21356, 22021, 23180, 26695, 34282, 44042, 53390, 68564, 85705, 88084, 101441, 106780, 110105, 171410, 202882, 220210, 325679, 342820, 405764, 440420, 507205, 651358, 1014410, 1302716, 1628395, 2028820, 3256790, 6187901, 6513580, 12375802, 24751604, 30939505, 61879010, 123758020]

約数ペア:

[(1, 123758020), (2, 61879010), (4, 30939505), (5, 24751604), (10, 12375802), (19, 6513580), (20, 6187901), (38, 3256790), (61, 2028820), (76, 1628395), (95, 1302716), (122, 1014410), (190, 651358), (244, 507205), (281, 440420), (305, 405764), (361, 342820), (380, 325679), (562, 220210), (610, 202882), (722, 171410), (1124, 110105), (1159, 106780), (1220, 101441), (1405, 88084), (1444, 85705), (1805, 68564), (2318, 53390), (2810, 44042), (3610, 34282), (4636, 26695), (5339, 23180), (5620, 22021), (5795, 21356), (7220, 17141), (10678, 11590)]