72451990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{997}}^1$

素因数の和:1073

約数の個数: 48

約数和(自身を含む): 144646128

約数和(自身を除く): 72194138

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 130, 169, 215, 338, 430, 559, 845, 997, 1118, 1690, 1994, 2795, 4985, 5590, 7267, 9970, 12961, 14534, 25922, 36335, 42871, 64805, 72670, 85742, 129610, 168493, 214355, 336986, 428710, 557323, 842465, 1114646, 1684930, 2786615, 5573230, 7245199, 14490398, 36225995, 72451990]

約数ペア:

[(1, 72451990), (2, 36225995), (5, 14490398), (10, 7245199), (13, 5573230), (26, 2786615), (43, 1684930), (65, 1114646), (86, 842465), (130, 557323), (169, 428710), (215, 336986), (338, 214355), (430, 168493), (559, 129610), (845, 85742), (997, 72670), (1118, 64805), (1690, 42871), (1994, 36335), (2795, 25922), (4985, 14534), (5590, 12961), (7267, 9970)]