81879990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{5179}}^1$

素因数の和:5237

約数の個数: 64

約数和(自身を含む): 214824960

約数和(自身を除く): 132944970

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 31, 34, 51, 62, 85, 93, 102, 155, 170, 186, 255, 310, 465, 510, 527, 930, 1054, 1581, 2635, 3162, 5179, 5270, 7905, 10358, 15537, 15810, 25895, 31074, 51790, 77685, 88043, 155370, 160549, 176086, 264129, 321098, 440215, 481647, 528258, 802745, 880430, 963294, 1320645, 1605490, 2408235, 2641290, 2729333, 4816470, 5458666, 8187999, 13646665, 16375998, 27293330, 40939995, 81879990]

約数ペア:

[(1, 81879990), (2, 40939995), (3, 27293330), (5, 16375998), (6, 13646665), (10, 8187999), (15, 5458666), (17, 4816470), (30, 2729333), (31, 2641290), (34, 2408235), (51, 1605490), (62, 1320645), (85, 963294), (93, 880430), (102, 802745), (155, 528258), (170, 481647), (186, 440215), (255, 321098), (310, 264129), (465, 176086), (510, 160549), (527, 155370), (930, 88043), (1054, 77685), (1581, 51790), (2635, 31074), (3162, 25895), (5179, 15810), (5270, 15537), (7905, 10358)]