20403919880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1\times {\mathrm{3023}}^1$

素因数の和:3243

約数の個数: 128

約数和(自身を含む): 49380710400

約数和(自身を除く): 28976790520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 83, 95, 107, 152, 166, 190, 214, 332, 380, 415, 428, 535, 664, 760, 830, 856, 1070, 1577, 1660, 2033, 2140, 3023, 3154, 3320, 4066, 4280, 6046, 6308, 7885, 8132, 8881, 10165, 12092, 12616, 15115, 15770, 16264, 17762, 20330, 24184, 30230, 31540, 35524, 40660, 44405, 57437, 60460, 63080, 71048, 81320, 88810, 114874, 120920, 168739, 177620, 229748, 250909, 287185, 323461, 337478, 355240, 459496, 501818, 574370, 646922, 674956, 843695, 1003636, 1148740, 1254545, 1293844, 1349912, 1617305, 1687390, 2007272, 2297480, 2509090, 2587688, 3234610, 3374780, 4767271, 5018180, 6145759, 6469220, 6749560, 9534542, 10036360, 12291518, 12938440, 19069084, 23836355, 24583036, 26847263, 30728795, 38138168, 47672710, 49166072, 53694526, 61457590, 95345420, 107389052, 122915180, 134236315, 190690840, 214778104, 245830360, 268472630, 510097997, 536945260, 1020195994, 1073890520, 2040391988, 2550489985, 4080783976, 5100979970, 10201959940, 20403919880]

約数ペア:

[(1, 20403919880), (2, 10201959940), (4, 5100979970), (5, 4080783976), (8, 2550489985), (10, 2040391988), (19, 1073890520), (20, 1020195994), (38, 536945260), (40, 510097997), (76, 268472630), (83, 245830360), (95, 214778104), (107, 190690840), (152, 134236315), (166, 122915180), (190, 107389052), (214, 95345420), (332, 61457590), (380, 53694526), (415, 49166072), (428, 47672710), (535, 38138168), (664, 30728795), (760, 26847263), (830, 24583036), (856, 23836355), (1070, 19069084), (1577, 12938440), (1660, 12291518), (2033, 10036360), (2140, 9534542), (3023, 6749560), (3154, 6469220), (3320, 6145759), (4066, 5018180), (4280, 4767271), (6046, 3374780), (6308, 3234610), (7885, 2587688), (8132, 2509090), (8881, 2297480), (10165, 2007272), (12092, 1687390), (12616, 1617305), (15115, 1349912), (15770, 1293844), (16264, 1254545), (17762, 1148740), (20330, 1003636), (24184, 843695), (30230, 674956), (31540, 646922), (35524, 574370), (40660, 501818), (44405, 459496), (57437, 355240), (60460, 337478), (63080, 323461), (71048, 287185), (81320, 250909), (88810, 229748), (114874, 177620), (120920, 168739)]