20808540870

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{487}}^1\times {\mathrm{1231}}^1$

素因数の和:1830

約数の個数: 128

約数和(自身を含む): 54542315520

約数和(自身を除く): 33733774650

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 89, 130, 178, 195, 267, 390, 445, 487, 534, 890, 974, 1157, 1231, 1335, 1461, 2314, 2435, 2462, 2670, 2922, 3471, 3693, 4870, 5785, 6155, 6331, 6942, 7305, 7386, 11570, 12310, 12662, 14610, 16003, 17355, 18465, 18993, 31655, 32006, 34710, 36930, 37986, 43343, 48009, 63310, 80015, 86686, 94965, 96018, 109559, 130029, 160030, 189930, 216715, 219118, 240045, 260058, 328677, 433430, 480090, 547795, 563459, 599497, 650145, 657354, 1095590, 1126918, 1198994, 1300290, 1424267, 1643385, 1690377, 1798491, 2817295, 2848534, 2997485, 3286770, 3380754, 3596982, 4272801, 5634590, 5994970, 7121335, 7793461, 8451885, 8545602, 8992455, 14242670, 15586922, 16903770, 17984910, 21364005, 23380383, 38967305, 42728010, 46760766, 53355233, 77934610, 106710466, 116901915, 160065699, 233803830, 266776165, 320131398, 533552330, 693618029, 800328495, 1387236058, 1600656990, 2080854087, 3468090145, 4161708174, 6936180290, 10404270435, 20808540870]

約数ペア:

[(1, 20808540870), (2, 10404270435), (3, 6936180290), (5, 4161708174), (6, 3468090145), (10, 2080854087), (13, 1600656990), (15, 1387236058), (26, 800328495), (30, 693618029), (39, 533552330), (65, 320131398), (78, 266776165), (89, 233803830), (130, 160065699), (178, 116901915), (195, 106710466), (267, 77934610), (390, 53355233), (445, 46760766), (487, 42728010), (534, 38967305), (890, 23380383), (974, 21364005), (1157, 17984910), (1231, 16903770), (1335, 15586922), (1461, 14242670), (2314, 8992455), (2435, 8545602), (2462, 8451885), (2670, 7793461), (2922, 7121335), (3471, 5994970), (3693, 5634590), (4870, 4272801), (5785, 3596982), (6155, 3380754), (6331, 3286770), (6942, 2997485), (7305, 2848534), (7386, 2817295), (11570, 1798491), (12310, 1690377), (12662, 1643385), (14610, 1424267), (16003, 1300290), (17355, 1198994), (18465, 1126918), (18993, 1095590), (31655, 657354), (32006, 650145), (34710, 599497), (36930, 563459), (37986, 547795), (43343, 480090), (48009, 433430), (63310, 328677), (80015, 260058), (86686, 240045), (94965, 219118), (96018, 216715), (109559, 189930), (130029, 160030)]