1444401820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{139}}^1\times {\mathrm{281}}^1$

素因数の和:515

約数の個数: 72

約数和(自身を含む): 3138896880

約数和(自身を除く): 1694495060

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 139, 172, 215, 278, 281, 430, 556, 562, 695, 860, 1124, 1390, 1405, 1849, 2780, 2810, 3698, 5620, 5977, 7396, 9245, 11954, 12083, 18490, 23908, 24166, 29885, 36980, 39059, 48332, 59770, 60415, 78118, 119540, 120830, 156236, 195295, 241660, 257011, 390590, 514022, 519569, 781180, 1028044, 1039138, 1285055, 1679537, 2078276, 2570110, 2597845, 3359074, 5140220, 5195690, 6718148, 8397685, 10391380, 16795370, 33590740, 72220091, 144440182, 288880364, 361100455, 722200910, 1444401820]

約数ペア:

[(1, 1444401820), (2, 722200910), (4, 361100455), (5, 288880364), (10, 144440182), (20, 72220091), (43, 33590740), (86, 16795370), (139, 10391380), (172, 8397685), (215, 6718148), (278, 5195690), (281, 5140220), (430, 3359074), (556, 2597845), (562, 2570110), (695, 2078276), (860, 1679537), (1124, 1285055), (1390, 1039138), (1405, 1028044), (1849, 781180), (2780, 519569), (2810, 514022), (3698, 390590), (5620, 257011), (5977, 241660), (7396, 195295), (9245, 156236), (11954, 120830), (12083, 119540), (18490, 78118), (23908, 60415), (24166, 59770), (29885, 48332), (36980, 39059)]