20898930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1307}}^1$

素因数の和:1371

約数の個数: 64

約数和(自身を含む): 55375488

約数和(自身を除く): 34476558

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 41, 65, 78, 82, 123, 130, 195, 205, 246, 390, 410, 533, 615, 1066, 1230, 1307, 1599, 2614, 2665, 3198, 3921, 5330, 6535, 7842, 7995, 13070, 15990, 16991, 19605, 33982, 39210, 50973, 53587, 84955, 101946, 107174, 160761, 169910, 254865, 267935, 321522, 509730, 535870, 696631, 803805, 1393262, 1607610, 2089893, 3483155, 4179786, 6966310, 10449465, 20898930]

約数ペア:

[(1, 20898930), (2, 10449465), (3, 6966310), (5, 4179786), (6, 3483155), (10, 2089893), (13, 1607610), (15, 1393262), (26, 803805), (30, 696631), (39, 535870), (41, 509730), (65, 321522), (78, 267935), (82, 254865), (123, 169910), (130, 160761), (195, 107174), (205, 101946), (246, 84955), (390, 53587), (410, 50973), (533, 39210), (615, 33982), (1066, 19605), (1230, 16991), (1307, 15990), (1599, 13070), (2614, 7995), (2665, 7842), (3198, 6535), (3921, 5330)]