17951428

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 36590400

約数和(自身を除く): 18638972

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 109, 197, 209, 218, 394, 418, 436, 788, 836, 1199, 2071, 2167, 2398, 3743, 4142, 4334, 4796, 7486, 8284, 8668, 14972, 21473, 22781, 41173, 42946, 45562, 82346, 85892, 91124, 164692, 236203, 407987, 472406, 815974, 944812, 1631948, 4487857, 8975714, 17951428]

約数ペア:

[(1, 17951428), (2, 8975714), (4, 4487857), (11, 1631948), (19, 944812), (22, 815974), (38, 472406), (44, 407987), (76, 236203), (109, 164692), (197, 91124), (209, 85892), (218, 82346), (394, 45562), (418, 42946), (436, 41173), (788, 22781), (836, 21473), (1199, 14972), (2071, 8668), (2167, 8284), (2398, 7486), (3743, 4796), (4142, 4334)]