31390356

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^2$

素因数の和:185

約数の個数: 72

約数和(自身を含む): 80502240

約数和(自身を除く): 49111884

約数列:

[1, 2, 3, 4, 6, 12, 19, 37, 38, 57, 61, 74, 76, 111, 114, 122, 148, 183, 222, 228, 244, 366, 444, 703, 732, 1159, 1406, 2109, 2257, 2318, 2812, 3477, 3721, 4218, 4514, 4636, 6771, 6954, 7442, 8436, 9028, 11163, 13542, 13908, 14884, 22326, 27084, 42883, 44652, 70699, 85766, 128649, 137677, 141398, 171532, 212097, 257298, 275354, 282796, 413031, 424194, 514596, 550708, 826062, 848388, 1652124, 2615863, 5231726, 7847589, 10463452, 15695178, 31390356]

約数ペア:

[(1, 31390356), (2, 15695178), (3, 10463452), (4, 7847589), (6, 5231726), (12, 2615863), (19, 1652124), (37, 848388), (38, 826062), (57, 550708), (61, 514596), (74, 424194), (76, 413031), (111, 282796), (114, 275354), (122, 257298), (148, 212097), (183, 171532), (222, 141398), (228, 137677), (244, 128649), (366, 85766), (444, 70699), (703, 44652), (732, 42883), (1159, 27084), (1406, 22326), (2109, 14884), (2257, 13908), (2318, 13542), (2812, 11163), (3477, 9028), (3721, 8436), (4218, 7442), (4514, 6954), (4636, 6771)]