20125971280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{83663}}^1$

素因数の和:83804

約数の個数: 80

約数和(自身を含む): 48800876544

約数和(自身を除く): 28674905264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 97, 124, 155, 194, 248, 310, 388, 485, 496, 620, 776, 970, 1240, 1552, 1940, 2480, 3007, 3880, 6014, 7760, 12028, 15035, 24056, 30070, 48112, 60140, 83663, 120280, 167326, 240560, 334652, 418315, 669304, 836630, 1338608, 1673260, 2593553, 3346520, 5187106, 6693040, 8115311, 10374212, 12967765, 16230622, 20748424, 25935530, 32461244, 40576555, 41496848, 51871060, 64922488, 81153110, 103742120, 129844976, 162306220, 207484240, 251574641, 324612440, 503149282, 649224880, 1006298564, 1257873205, 2012597128, 2515746410, 4025194256, 5031492820, 10062985640, 20125971280]

約数ペア:

[(1, 20125971280), (2, 10062985640), (4, 5031492820), (5, 4025194256), (8, 2515746410), (10, 2012597128), (16, 1257873205), (20, 1006298564), (31, 649224880), (40, 503149282), (62, 324612440), (80, 251574641), (97, 207484240), (124, 162306220), (155, 129844976), (194, 103742120), (248, 81153110), (310, 64922488), (388, 51871060), (485, 41496848), (496, 40576555), (620, 32461244), (776, 25935530), (970, 20748424), (1240, 16230622), (1552, 12967765), (1940, 10374212), (2480, 8115311), (3007, 6693040), (3880, 5187106), (6014, 3346520), (7760, 2593553), (12028, 1673260), (15035, 1338608), (24056, 836630), (30070, 669304), (48112, 418315), (60140, 334652), (83663, 240560), (120280, 167326)]