19885970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:219

約数の個数: 64

約数和(自身を含む): 41489280

約数和(自身を除く): 21603310

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 83, 95, 97, 130, 166, 190, 194, 247, 415, 485, 494, 830, 970, 1079, 1235, 1261, 1577, 1843, 2158, 2470, 2522, 3154, 3686, 5395, 6305, 7885, 8051, 9215, 10790, 12610, 15770, 16102, 18430, 20501, 23959, 40255, 41002, 47918, 80510, 102505, 104663, 119795, 152969, 205010, 209326, 239590, 305938, 523315, 764845, 1046630, 1529690, 1988597, 3977194, 9942985, 19885970]

約数ペア:

[(1, 19885970), (2, 9942985), (5, 3977194), (10, 1988597), (13, 1529690), (19, 1046630), (26, 764845), (38, 523315), (65, 305938), (83, 239590), (95, 209326), (97, 205010), (130, 152969), (166, 119795), (190, 104663), (194, 102505), (247, 80510), (415, 47918), (485, 41002), (494, 40255), (830, 23959), (970, 20501), (1079, 18430), (1235, 16102), (1261, 15770), (1577, 12610), (1843, 10790), (2158, 9215), (2470, 8051), (2522, 7885), (3154, 6305), (3686, 5395)]