78736520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1301}}^1$

素因数の和:1418

約数の個数: 64

約数和(自身を含む): 189831600

約数和(自身を除く): 111095080

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 89, 136, 170, 178, 340, 356, 445, 680, 712, 890, 1301, 1513, 1780, 2602, 3026, 3560, 5204, 6052, 6505, 7565, 10408, 12104, 13010, 15130, 22117, 26020, 30260, 44234, 52040, 60520, 88468, 110585, 115789, 176936, 221170, 231578, 442340, 463156, 578945, 884680, 926312, 1157890, 1968413, 2315780, 3936826, 4631560, 7873652, 9842065, 15747304, 19684130, 39368260, 78736520]

約数ペア:

[(1, 78736520), (2, 39368260), (4, 19684130), (5, 15747304), (8, 9842065), (10, 7873652), (17, 4631560), (20, 3936826), (34, 2315780), (40, 1968413), (68, 1157890), (85, 926312), (89, 884680), (136, 578945), (170, 463156), (178, 442340), (340, 231578), (356, 221170), (445, 176936), (680, 115789), (712, 110585), (890, 88468), (1301, 60520), (1513, 52040), (1780, 44234), (2602, 30260), (3026, 26020), (3560, 22117), (5204, 15130), (6052, 13010), (6505, 12104), (7565, 10408)]