72173140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{131}}^1\times {\mathrm{163}}^1$

素因数の和:329

約数の個数: 72

約数和(自身を含む): 166386528

約数和(自身を除く): 94213388

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 131, 163, 169, 260, 262, 326, 338, 524, 652, 655, 676, 815, 845, 1310, 1630, 1690, 1703, 2119, 2620, 3260, 3380, 3406, 4238, 6812, 8476, 8515, 10595, 17030, 21190, 21353, 22139, 27547, 34060, 42380, 42706, 44278, 55094, 85412, 88556, 106765, 110188, 110695, 137735, 213530, 221390, 275470, 277589, 427060, 442780, 550940, 555178, 1110356, 1387945, 2775890, 3608657, 5551780, 7217314, 14434628, 18043285, 36086570, 72173140]

約数ペア:

[(1, 72173140), (2, 36086570), (4, 18043285), (5, 14434628), (10, 7217314), (13, 5551780), (20, 3608657), (26, 2775890), (52, 1387945), (65, 1110356), (130, 555178), (131, 550940), (163, 442780), (169, 427060), (260, 277589), (262, 275470), (326, 221390), (338, 213530), (524, 137735), (652, 110695), (655, 110188), (676, 106765), (815, 88556), (845, 85412), (1310, 55094), (1630, 44278), (1690, 42706), (1703, 42380), (2119, 34060), (2620, 27547), (3260, 22139), (3380, 21353), (3406, 21190), (4238, 17030), (6812, 10595), (8476, 8515)]