49991940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:262

約数の個数: 144

約数和(自身を含む): 160458480

約数和(自身を除く): 110466540

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 61, 87, 90, 116, 122, 145, 157, 174, 180, 183, 244, 261, 290, 305, 314, 348, 366, 435, 471, 522, 549, 580, 610, 628, 732, 785, 870, 915, 942, 1044, 1098, 1220, 1305, 1413, 1570, 1740, 1769, 1830, 1884, 2196, 2355, 2610, 2745, 2826, 3140, 3538, 3660, 4553, 4710, 5220, 5307, 5490, 5652, 7065, 7076, 8845, 9106, 9420, 9577, 10614, 10980, 13659, 14130, 15921, 17690, 18212, 19154, 21228, 22765, 26535, 27318, 28260, 28731, 31842, 35380, 38308, 40977, 45530, 47885, 53070, 54636, 57462, 63684, 68295, 79605, 81954, 86193, 91060, 95770, 106140, 114924, 136590, 143655, 159210, 163908, 172386, 191540, 204885, 273180, 277733, 287310, 318420, 344772, 409770, 430965, 555466, 574620, 819540, 833199, 861930, 1110932, 1388665, 1666398, 1723860, 2499597, 2777330, 3332796, 4165995, 4999194, 5554660, 8331990, 9998388, 12497985, 16663980, 24995970, 49991940]

約数ペア:

[(1, 49991940), (2, 24995970), (3, 16663980), (4, 12497985), (5, 9998388), (6, 8331990), (9, 5554660), (10, 4999194), (12, 4165995), (15, 3332796), (18, 2777330), (20, 2499597), (29, 1723860), (30, 1666398), (36, 1388665), (45, 1110932), (58, 861930), (60, 833199), (61, 819540), (87, 574620), (90, 555466), (116, 430965), (122, 409770), (145, 344772), (157, 318420), (174, 287310), (180, 277733), (183, 273180), (244, 204885), (261, 191540), (290, 172386), (305, 163908), (314, 159210), (348, 143655), (366, 136590), (435, 114924), (471, 106140), (522, 95770), (549, 91060), (580, 86193), (610, 81954), (628, 79605), (732, 68295), (785, 63684), (870, 57462), (915, 54636), (942, 53070), (1044, 47885), (1098, 45530), (1220, 40977), (1305, 38308), (1413, 35380), (1570, 31842), (1740, 28731), (1769, 28260), (1830, 27318), (1884, 26535), (2196, 22765), (2355, 21228), (2610, 19154), (2745, 18212), (2826, 17690), (3140, 15921), (3538, 14130), (3660, 13659), (4553, 10980), (4710, 10614), (5220, 9577), (5307, 9420), (5490, 9106), (5652, 8845), (7065, 7076)]