64880820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{311}}^1$

素因数の和:406

約数の個数: 144

約数和(自身を含む): 211236480

約数和(自身を除く): 146355660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 61, 76, 90, 95, 114, 122, 171, 180, 183, 190, 228, 244, 285, 305, 311, 342, 366, 380, 549, 570, 610, 622, 684, 732, 855, 915, 933, 1098, 1140, 1159, 1220, 1244, 1555, 1710, 1830, 1866, 2196, 2318, 2745, 2799, 3110, 3420, 3477, 3660, 3732, 4636, 4665, 5490, 5598, 5795, 5909, 6220, 6954, 9330, 10431, 10980, 11196, 11590, 11818, 13908, 13995, 17385, 17727, 18660, 18971, 20862, 23180, 23636, 27990, 29545, 34770, 35454, 37942, 41724, 52155, 53181, 55980, 56913, 59090, 69540, 70908, 75884, 88635, 94855, 104310, 106362, 113826, 118180, 170739, 177270, 189710, 208620, 212724, 227652, 265905, 284565, 341478, 354540, 360449, 379420, 531810, 569130, 682956, 720898, 853695, 1063620, 1081347, 1138260, 1441796, 1707390, 1802245, 2162694, 3244041, 3414780, 3604490, 4325388, 5406735, 6488082, 7208980, 10813470, 12976164, 16220205, 21626940, 32440410, 64880820]

約数ペア:

[(1, 64880820), (2, 32440410), (3, 21626940), (4, 16220205), (5, 12976164), (6, 10813470), (9, 7208980), (10, 6488082), (12, 5406735), (15, 4325388), (18, 3604490), (19, 3414780), (20, 3244041), (30, 2162694), (36, 1802245), (38, 1707390), (45, 1441796), (57, 1138260), (60, 1081347), (61, 1063620), (76, 853695), (90, 720898), (95, 682956), (114, 569130), (122, 531810), (171, 379420), (180, 360449), (183, 354540), (190, 341478), (228, 284565), (244, 265905), (285, 227652), (305, 212724), (311, 208620), (342, 189710), (366, 177270), (380, 170739), (549, 118180), (570, 113826), (610, 106362), (622, 104310), (684, 94855), (732, 88635), (855, 75884), (915, 70908), (933, 69540), (1098, 59090), (1140, 56913), (1159, 55980), (1220, 53181), (1244, 52155), (1555, 41724), (1710, 37942), (1830, 35454), (1866, 34770), (2196, 29545), (2318, 27990), (2745, 23636), (2799, 23180), (3110, 20862), (3420, 18971), (3477, 18660), (3660, 17727), (3732, 17385), (4636, 13995), (4665, 13908), (5490, 11818), (5598, 11590), (5795, 11196), (5909, 10980), (6220, 10431), (6954, 9330)]