205405380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{281}}^1$

素因数の和:458

約数の個数: 144

約数和(自身を含む): 650377728

約数和(自身を除く): 444972348

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 131, 155, 180, 186, 262, 279, 281, 310, 372, 393, 465, 524, 558, 562, 620, 655, 786, 843, 930, 1116, 1124, 1179, 1310, 1395, 1405, 1572, 1686, 1860, 1965, 2358, 2529, 2620, 2790, 2810, 3372, 3930, 4061, 4215, 4716, 5058, 5580, 5620, 5895, 7860, 8122, 8430, 8711, 10116, 11790, 12183, 12645, 16244, 16860, 17422, 20305, 23580, 24366, 25290, 26133, 34844, 36549, 36811, 40610, 43555, 48732, 50580, 52266, 60915, 73098, 73622, 78399, 81220, 87110, 104532, 110433, 121830, 130665, 146196, 147244, 156798, 174220, 182745, 184055, 220866, 243660, 261330, 313596, 331299, 365490, 368110, 391995, 441732, 522660, 552165, 662598, 730980, 736220, 783990, 1104330, 1141141, 1325196, 1567980, 1656495, 2208660, 2282282, 3312990, 3423423, 4564564, 5705705, 6625980, 6846846, 10270269, 11411410, 13693692, 17117115, 20540538, 22822820, 34234230, 41081076, 51351345, 68468460, 102702690, 205405380]

約数ペア:

[(1, 205405380), (2, 102702690), (3, 68468460), (4, 51351345), (5, 41081076), (6, 34234230), (9, 22822820), (10, 20540538), (12, 17117115), (15, 13693692), (18, 11411410), (20, 10270269), (30, 6846846), (31, 6625980), (36, 5705705), (45, 4564564), (60, 3423423), (62, 3312990), (90, 2282282), (93, 2208660), (124, 1656495), (131, 1567980), (155, 1325196), (180, 1141141), (186, 1104330), (262, 783990), (279, 736220), (281, 730980), (310, 662598), (372, 552165), (393, 522660), (465, 441732), (524, 391995), (558, 368110), (562, 365490), (620, 331299), (655, 313596), (786, 261330), (843, 243660), (930, 220866), (1116, 184055), (1124, 182745), (1179, 174220), (1310, 156798), (1395, 147244), (1405, 146196), (1572, 130665), (1686, 121830), (1860, 110433), (1965, 104532), (2358, 87110), (2529, 81220), (2620, 78399), (2790, 73622), (2810, 73098), (3372, 60915), (3930, 52266), (4061, 50580), (4215, 48732), (4716, 43555), (5058, 40610), (5580, 36811), (5620, 36549), (5895, 34844), (7860, 26133), (8122, 25290), (8430, 24366), (8711, 23580), (10116, 20305), (11790, 17422), (12183, 16860), (12645, 16244)]