81084220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:228

約数の個数: 144

約数和(自身を含む): 217873152

約数和(自身を除く): 136788932

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 31, 34, 35, 49, 62, 68, 70, 85, 98, 119, 124, 140, 155, 157, 170, 196, 217, 238, 245, 310, 314, 340, 434, 476, 490, 527, 595, 620, 628, 785, 833, 868, 980, 1054, 1085, 1099, 1190, 1519, 1570, 1666, 2108, 2170, 2198, 2380, 2635, 2669, 3038, 3140, 3332, 3689, 4165, 4340, 4396, 4867, 5270, 5338, 5495, 6076, 7378, 7595, 7693, 8330, 9734, 10540, 10676, 10990, 13345, 14756, 15190, 15386, 16660, 18445, 18683, 19468, 21980, 24335, 25823, 26690, 30380, 30772, 34069, 36890, 37366, 38465, 48670, 51646, 53380, 68138, 73780, 74732, 76930, 82739, 93415, 97340, 103292, 129115, 130781, 136276, 153860, 165478, 170345, 186830, 238483, 258230, 261562, 330956, 340690, 373660, 413695, 476966, 516460, 523124, 579173, 653905, 681380, 827390, 953932, 1158346, 1192415, 1307810, 1654780, 2316692, 2384830, 2615620, 2895865, 4054211, 4769660, 5791730, 8108422, 11583460, 16216844, 20271055, 40542110, 81084220]

約数ペア:

[(1, 81084220), (2, 40542110), (4, 20271055), (5, 16216844), (7, 11583460), (10, 8108422), (14, 5791730), (17, 4769660), (20, 4054211), (28, 2895865), (31, 2615620), (34, 2384830), (35, 2316692), (49, 1654780), (62, 1307810), (68, 1192415), (70, 1158346), (85, 953932), (98, 827390), (119, 681380), (124, 653905), (140, 579173), (155, 523124), (157, 516460), (170, 476966), (196, 413695), (217, 373660), (238, 340690), (245, 330956), (310, 261562), (314, 258230), (340, 238483), (434, 186830), (476, 170345), (490, 165478), (527, 153860), (595, 136276), (620, 130781), (628, 129115), (785, 103292), (833, 97340), (868, 93415), (980, 82739), (1054, 76930), (1085, 74732), (1099, 73780), (1190, 68138), (1519, 53380), (1570, 51646), (1666, 48670), (2108, 38465), (2170, 37366), (2198, 36890), (2380, 34069), (2635, 30772), (2669, 30380), (3038, 26690), (3140, 25823), (3332, 24335), (3689, 21980), (4165, 19468), (4340, 18683), (4396, 18445), (4867, 16660), (5270, 15386), (5338, 15190), (5495, 14756), (6076, 13345), (7378, 10990), (7595, 10676), (7693, 10540), (8330, 9734)]