81423930

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{20407}}^1$

素因数の和:20443

約数の個数: 64

約数和(自身を含む): 235100160

約数和(自身を除く): 153676230

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 38, 42, 57, 70, 95, 105, 114, 133, 190, 210, 266, 285, 399, 570, 665, 798, 1330, 1995, 3990, 20407, 40814, 61221, 102035, 122442, 142849, 204070, 285698, 306105, 387733, 428547, 612210, 714245, 775466, 857094, 1163199, 1428490, 1938665, 2142735, 2326398, 2714131, 3877330, 4285470, 5428262, 5815995, 8142393, 11631990, 13570655, 16284786, 27141310, 40711965, 81423930]

約数ペア:

[(1, 81423930), (2, 40711965), (3, 27141310), (5, 16284786), (6, 13570655), (7, 11631990), (10, 8142393), (14, 5815995), (15, 5428262), (19, 4285470), (21, 3877330), (30, 2714131), (35, 2326398), (38, 2142735), (42, 1938665), (57, 1428490), (70, 1163199), (95, 857094), (105, 775466), (114, 714245), (133, 612210), (190, 428547), (210, 387733), (266, 306105), (285, 285698), (399, 204070), (570, 142849), (665, 122442), (798, 102035), (1330, 61221), (1995, 40814), (3990, 20407)]