321665920

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^2\times {\mathrm{523}}^1$

素因数の和:604

約数の個数: 96

約数和(自身を含む): 796107960

約数和(自身を除く): 474442040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 523, 620, 640, 961, 992, 1046, 1240, 1922, 1984, 2092, 2480, 2615, 3844, 3968, 4184, 4805, 4960, 5230, 7688, 8368, 9610, 9920, 10460, 15376, 16213, 16736, 19220, 19840, 20920, 30752, 32426, 33472, 38440, 41840, 61504, 64852, 66944, 76880, 81065, 83680, 123008, 129704, 153760, 162130, 167360, 259408, 307520, 324260, 334720, 502603, 518816, 615040, 648520, 1005206, 1037632, 1297040, 2010412, 2075264, 2513015, 2594080, 4020824, 5026030, 5188160, 8041648, 10052060, 10376320, 16083296, 20104120, 32166592, 40208240, 64333184, 80416480, 160832960, 321665920]

約数ペア:

[(1, 321665920), (2, 160832960), (4, 80416480), (5, 64333184), (8, 40208240), (10, 32166592), (16, 20104120), (20, 16083296), (31, 10376320), (32, 10052060), (40, 8041648), (62, 5188160), (64, 5026030), (80, 4020824), (124, 2594080), (128, 2513015), (155, 2075264), (160, 2010412), (248, 1297040), (310, 1037632), (320, 1005206), (496, 648520), (523, 615040), (620, 518816), (640, 502603), (961, 334720), (992, 324260), (1046, 307520), (1240, 259408), (1922, 167360), (1984, 162130), (2092, 153760), (2480, 129704), (2615, 123008), (3844, 83680), (3968, 81065), (4184, 76880), (4805, 66944), (4960, 64852), (5230, 61504), (7688, 41840), (8368, 38440), (9610, 33472), (9920, 32426), (10460, 30752), (15376, 20920), (16213, 19840), (16736, 19220)]