19879897000

素因数分解:

$2^3\times 5^3\times {\mathrm{31}}^1\times {\mathrm{641287}}^1$

素因数の和:641339

約数の個数: 64

約数和(自身を含む): 48019645440

約数和(自身を除く): 28139748440

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 125, 155, 200, 248, 250, 310, 500, 620, 775, 1000, 1240, 1550, 3100, 3875, 6200, 7750, 15500, 31000, 641287, 1282574, 2565148, 3206435, 5130296, 6412870, 12825740, 16032175, 19879897, 25651480, 32064350, 39759794, 64128700, 79519588, 80160875, 99399485, 128257400, 159039176, 160321750, 198798970, 320643500, 397597940, 496997425, 641287000, 795195880, 993994850, 1987989700, 2484987125, 3975979400, 4969974250, 9939948500, 19879897000]

約数ペア:

[(1, 19879897000), (2, 9939948500), (4, 4969974250), (5, 3975979400), (8, 2484987125), (10, 1987989700), (20, 993994850), (25, 795195880), (31, 641287000), (40, 496997425), (50, 397597940), (62, 320643500), (100, 198798970), (124, 160321750), (125, 159039176), (155, 128257400), (200, 99399485), (248, 80160875), (250, 79519588), (310, 64128700), (500, 39759794), (620, 32064350), (775, 25651480), (1000, 19879897), (1240, 16032175), (1550, 12825740), (3100, 6412870), (3875, 5130296), (6200, 3206435), (7750, 2565148), (15500, 1282574), (31000, 641287)]