20195783990

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1\times {\mathrm{197}}^1\times {\mathrm{563}}^1$

素因数の和:1037

約数の個数: 64

約数和(自身を含む): 37146574080

約数和(自身を除く): 16950790090

約数列:

[1, 2, 5, 10, 131, 139, 197, 262, 278, 394, 563, 655, 695, 985, 1126, 1310, 1390, 1970, 2815, 5630, 18209, 25807, 27383, 36418, 51614, 54766, 73753, 78257, 91045, 110911, 129035, 136915, 147506, 156514, 182090, 221822, 258070, 273830, 368765, 391285, 554555, 737530, 782570, 1109110, 3587173, 7174346, 10251667, 14529341, 15416629, 17935865, 20503334, 29058682, 30833258, 35871730, 51258335, 72646705, 77083145, 102516670, 145293410, 154166290, 2019578399, 4039156798, 10097891995, 20195783990]

約数ペア:

[(1, 20195783990), (2, 10097891995), (5, 4039156798), (10, 2019578399), (131, 154166290), (139, 145293410), (197, 102516670), (262, 77083145), (278, 72646705), (394, 51258335), (563, 35871730), (655, 30833258), (695, 29058682), (985, 20503334), (1126, 17935865), (1310, 15416629), (1390, 14529341), (1970, 10251667), (2815, 7174346), (5630, 3587173), (18209, 1109110), (25807, 782570), (27383, 737530), (36418, 554555), (51614, 391285), (54766, 368765), (73753, 273830), (78257, 258070), (91045, 221822), (110911, 182090), (129035, 156514), (136915, 147506)]